/*
 * Copyright 2009 Original Author(s)
 * 
 * This file is part of Kommando
 * 
 * Kommando is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Kommando is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Kommando.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.kommando.core.search;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.kommando.core.action.Action;
import org.kommando.core.catalog.CatalogObject;
import org.kommando.core.search.ranking.DefaultStringScorer;
import org.kommando.core.search.ranking.StringScorer;
import org.kommando.core.util.Assert;

/**
 * @author Peter De Bruycker
 */
public class ActionSearcher {
    private StringScorer stringRanker = new DefaultStringScorer();

    public List<Result<Action>> searchActions(List<Action> actions, CatalogObject directObject, String query) {
        Assert.argumentNotNull("actions", actions);
        Assert.argumentNotNull("directObject", directObject);

        List<Result<Action>> results = new ArrayList<Result<Action>>();

        for (Action action : actions) {
            if (action.isApplicable(directObject)) {
                Set<Integer> matchedIndexes = new HashSet<Integer>();
                float score = stringRanker.score(action.getName(), query, matchedIndexes);

                if (score > 0) {
                    results.add(new ScoredResult<Action>(action, score, matchedIndexes));
                }
            }
        }

        Collections.sort(results, new ResultComparator());

        return results;
    }

}
